about bones - I understand that it is cooked bones that cause the problem - something dogs and cats do not encounter in the wild.
I read this on another forum where a lady was having a problem with neighbor walking his dog to do doo-doo on lady's lawn. Apparently if you get some bacon fat (liquid) and pour it over the doo-doo, the dog will eat it and then later (hopefully in his own home) throw it up.
And please don't say this is cruel, you KNOW dogs eat stuff like this all the time... ;)